Telephone instrument



FIG. 1 is an elevational perspective view of a telephone instrument showing my design;

FIG. 2 is an elevational side view of the telephone instrument shown in FIG. 1;

FIG. 3 is an elevational view of the other side of the telephone instrument;

FIG. 4 is a bottom view of the telephone instrument; and

FIG. 5 is an elevational rear view of the telephone instrument. 

The ornamental design for a telephone instrument, as shown. 